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公开(公告)号：KR100874485B1
公开(公告)日：2008-12-18
申请号：KR1020070050197
申请日：2007-05-23
Applicant: 한국전자통신연구원
Abstract: An apparatus and a method for generating a downlink signal, and an apparatus and a method for searching a cell are provided to estimate a frame synchronization and a cell group search by using a plurality of synchronization patterns formed in one frame. An apparatus for generating a downlink signal includes a pattern generator(110), and a time-frequency mapper(130). The pattern generator(110) generates a synchronization pattern for a plurality of synchronization blocks which form one frame of the downlink signal. The synchronization pattern has a cell group number and start point information of the frame. The plurality of synchronization blocks are a group of a plurality of consecutive sub frames in the frame. The time-frequency mapper(130) generates the downlink signal by mapping the synchronization pattern to a time-frequency domain. The pattern generator(110) generates the synchronization pattern by a combination of a cell group identifying code for identifying a cell group, and a frame synchronization identifying code for indicating a start point of the frame. The synchronization pattern generated by a different code combination is assigned to each of the plurality of synchronization blocks.
Abstract translation: 提供了一种用于生成下行链路信号的设备和方法，以及用于搜索小区的设备和方法，以通过使用在一个帧中形成的多个同步模式来估计帧同步和小区组搜索。 一种用于生成下行链路信号的设备包括模式生成器（110）和时间频率映射器（130）。 模式生成器（110）为形成下行链路信号的一个帧的多个同步块生成同步模式。 同步模式具有单元组号和帧的起点信息。 多个同步块是帧中多个连续子帧的组。 时间 - 频率映射器（130）通过将同步模式映射到时间 - 频率域来生成下行链路信号。 模式生成器（110）通过用于识别小区组的小区组识别码和用于指示帧的起始点的帧同步识别码的组合来生成同步模式。 由不同代码组合产生的同步模式被分配给多个同步块中的每一个。
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公开(公告)号：KR1020080099807A
公开(公告)日：2008-11-13
申请号：KR1020080042995
申请日：2008-05-08
CPC classification number: H04L5/0007 , H04L27/2666 , H04L2025/03414 , H04W56/00
Abstract: A method for mapping a secondary synchronization channel symbol in an OFDM cellular system provides efficiency of mapping by setting two orthogonal code sequence numbers and performing the mapping of the secondary synchronization channel symbol. A cell group number, the number of cell groups used in the system, a P-BCH antenna information index, the number of secondary synchronization channel symbol per frame, a secondary synchronization channel symbol timing index and the number of the secondary synchronization channel orthogonal code sequence used in system are assembled in two orthogonal code sequences(310,311,320,321) of the secondary synchronization channel symbol. The set up number is assigned and the secondary synchronization channel symbol is mapped.
Abstract translation: 用于在OFDM蜂窝系统中映射辅同步信道符号的方法通过设置两个正交码序列号并执行次同步信道符号的映射来提供映射效率。 小区组号，系统中使用的小区组的数量，P-BCH天线信息索引，每帧的次同步信道符号数，辅同步信道符号定时索引和次同步信道正交码的数量 系统中使用的序列被组装在次同步信道符号的两个正交码序列（310,311,320,321）中。 分配设置号码，并映射辅同步通道符号。
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公开(公告)号：KR1020080084740A
公开(公告)日：2008-09-19
申请号：KR1020080023952
申请日：2008-03-14
Applicant: 한국전자통신연구원
CPC classification number: H04W74/004 , H04W74/0833 , H04W74/0866 , H04W72/0406 , H04W74/085
Abstract: A preamble allocation method and a random access method in a mobile communication system are provided to prevent an unnecessary collusion and a delay of a processing time by using a preamble resource allocated to a corresponding mobile station. A preamble allocation method in a mobile communication system includes the steps of: dividing a preamble resource into a competition based group and a reservation allocation group; dividing the preamble resource into a competition based region for transmitting the preamble based on the preamble resource corresponding to the competition based group, and a reservation allocation region for transmitting the preamble based on the preamble resource corresponding to the reservation allocation group; broadcasting the preamble configuration information for the preamble resource which is divided into the competition based group and the reservation allocation group; and allocating the preamble resource of the reservation allocation group to a predetermined mobile station.
Abstract translation: 提供移动通信系统中的前导码分配方法和随机接入方法，通过使用分配给相应移动台的前导码资源来防止不必要的串通和延迟处理时间。 移动通信系统中的前导码分配方法包括以下步骤：将前同步码资源划分为基于竞争的组和预留分配组; 将所述前导码资源划分为基于竞争的区域，用于基于与所述基于竞争的组对应的所述前导资源发送所述前导码;以及预约分配区域，用于基于与所述预留分配组对应的所述前导资源来发送所述前导; 广播用于划分为基于竞争的组和预约分配组的前同步码资源的前同步码配置信息; 以及将预约分配组的前导资源分配给预定的移动台。
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公开(公告)号：KR1020080082888A
公开(公告)日：2008-09-12
申请号：KR1020070107847
申请日：2007-10-25
IPC: H04B7/26
CPC classification number: H04W72/04 , H04L5/0044 , H04W72/042 , H04W72/121
Abstract: A radio resource allocation method in a mobile communication system is provided to recover radio resources temporarily if a transmission packet does not exist, so that the recovered resources can be newly allocated to another mobile terminal, thereby efficiently operating resource allocation, recovery, and reallocation according to existence of the packet. If a downlink packet does not exist for the first mobile terminal assigned with downlink radio resources, the assigned radio resources are recovered and assigned to the second mobile terminal. It is continuously confirmed whether a new downlink packet exists for the first mobile terminal whose radio resources are recovered. If so, the radio resources assigned to the second terminal are recovered and reassigned to the first terminal.
Abstract translation: 提供一种移动通信系统中的无线电资源分配方法，用于在不存在传输分组的情况下临时恢复无线电资源，从而可以将恢复的资源重新分配给另一个移动终端，从而有效地操作资源分配，恢复和重新分配 到包的存在。 如果对于分配有下行链路无线电资源的第一移动终端不存在下行链路分组，则分配的无线电资源被恢复并分配给第二移动终端。 持续确定对于其无线资源被恢复的第一移动终端是否存在新的下行链路分组。 如果是，分配给第二终端的无线电资源被恢复并重新分配给第一终端。
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公开(公告)号：KR1020080082430A
公开(公告)日：2008-09-11
申请号：KR1020070121321
申请日：2007-11-27
CPC classification number: H04B7/0671 , H04L1/0625 , H04L27/2626
Abstract: A signal transmission method is provided to reduce a time diversity gain for an MS(Mobile Station) moving at low speed, while a space diversity gain for reducing interference from neighboring sectors can be given to an MS located around a sector border. Plural BCH symbols are generated and outputted(S201). Plural SCH(Synchronization Channel) symbols are generated and outputted(S203). Other channel symbols are generated and outputted(S205). TDM(Time Division Multiplexing)/FDM(Frequency Division Multiplexing) processes are performed for the BCH, SCH, and other channel symbols. A cyclic delay matrix is applied to generate transmission signals for each antenna. The channel symbols are transmitted to a sector.
Abstract translation: 提供了一种信号传输方法，以减少MS（移动站）以低速移动的时间分集增益，同时可以向位于扇区边界周围的MS提供用于减少来自相邻扇区的干扰的空间分集增益。 生成并输出多个BCH符号（S201）。 生成并输出多个SCH（同步信道）符号（S203）。 生成并输出其他通道符号（S205）。 对于BCH，SCH和其他信道符号执行TDM（时分复用）/ FDM（频分复用）处理。 应用循环延迟矩阵来产生每个天线的传输信号。 信道符号被发送到扇区。
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Patent Agency Ranking
公开(公告)号：KR100857907B1
公开(公告)日：2008-09-10
申请号：KR1020070037003
申请日：2007-04-16
Applicant: 한국전자통신연구원
CPC classification number: H04B7/0842 , H04B7/0413 , H04L27/2613 , H04L27/2656
Abstract: A receiver for detecting random access preambles in a mobile communication system is provided to detect a receiving path of each receiving antenna and the random access preambles received to multiple random access channels through multi-antennas to process signals received from the multi-antennas. A conjugate complex number generator stores a preamble sequence for plural receiving signals, and outputs a conjugate complex number corresponding to a prestored preamble sequence according to a channel band at which a receiving signal composed of at least one input sample is transmitted. Pre-processing units(100,100') process each of the received receiving signals to output plural preambles respectively. Preamble calculators(200,200') output power information about the receiving signals on the basis of the plural preambles and the conjugate complex number. The power information includes power values of each of input samples composing the receiving signals. A non-coherent combiner(300) combines and outputs the outputted power information into one power information. A peak detector(400) provides preamble information about the plural receiving signals for controlling a receiver on the basis of the maximum power value in the power values of the outputted power information.
Abstract translation: 提供了一种用于检测移动通信系统中的随机接入前同步码的接收机，用于通过多天线来检测接收天线的接收路径和接收到多个随机接入信道的随机接入前导码，以处理从多个天线接收的信号。 共轭复数发生器存储用于多个接收信号的前同步码序列，并且根据传输由至少一个输入样本组成的接收信号的信道频带输出与预先存储的前同步码序列相对应的共轭复数。 预处理单元（100,100'）处理每个接收到的接收信号以分别输出多个前导码。 前导码计算器（200,200'）基于多个前导码和共轭复数输出关于接收信号的功率信息。 功率信息包括构成接收信号的每个输入样本的功率值。 非相干组合器（300）将输出的功率信息组合并输出到一个功率信息中。 峰值检测器（400）根据输出功率信息的功率值中的最大功率值，提供关于多个接收信号的前导信息，用于控制接收机。
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公开(公告)号：KR1020080079630A
公开(公告)日：2008-09-01
申请号：KR1020080018027
申请日：2008-02-27
CPC classification number: H04L5/0055 , H04L1/004 , H04L5/0007 , H04L27/3494 , H04L61/1529 , H04L2025/0342
Abstract: A bit transmission method of different control channels is provided to perform modulation by binding bits of different control channels, or to perform an encoding process by binding the bits, and to send the bound bits, thereby allocating the same frequency, time, and code resources to two pieces of information. A base station performs a CRC(Cyclic Redundancy Check) function after receiving packet data(510) from a mobile station to check whether an error exists, and if so, the base station generates an NACK bit, and if not, the base station generates an ACK bit. The base station detects reception strength of the packet data to generate a power control symbol, and transmits a symbol(520) for combining the ACK/NACK bits with the power control symbol to a downlink.
Abstract translation: 提供不同控制信道的一种传输方式，通过绑定不同控制信道的比特来执行调制，或通过绑定比特来执行编码处理，并发送绑定的比特，从而分配相同的频率，时间和码资源 到两条信息。 基站在从移动台接收到分组数据（510）后执行CRC（循环冗余校验）功能，以检查是否存在错误，如果是，则基站生成NACK比特，如果不生成，则基站生成 一个ACK位。 基站检测分组数据的接收强度以生成功率控制符号，并将用于将ACK / NACK比特与功率控制符号组合的符号（520）发送到下行链路。
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公开(公告)号：KR1020080079629A
公开(公告)日：2008-09-01
申请号：KR1020080018026
申请日：2008-02-27
CPC classification number: H04J11/0069 , H04B1/70735 , H04B1/7083 , H04J13/0022
Abstract: A method for mapping a pilot sequence and a synchronization channel sequence is provided to improve cell search performance of a mobile station in a cellular system. A method for mapping a pilot sequence and a synchronization channel sequence includes the step of combining a pilot channel PN(Pseudo-Noise) code with a pilot channel orthogonal code to divide cell identifiers used in a mobile communication system. The cell identifiers are equally divided into cell groups. Primary synchronization channels(100-A,100-B) include information about the cell identifiers in the cell group. Secondary synchronization channels(101-A,101-B) include information about the cell group. A secondary synchronization code is allocated in correspondence to the pilot channel PN code.
Abstract translation: 提供了用于映射导频序列和同步信道序列的方法，以改善移动台在蜂窝系统中的小区搜索性能。 用于映射导频序列和同步信道序列的方法包括将导频信道PN（伪噪声）码与导频信道正交码组合以划分移动通信系统中使用的小区标识符的步骤。 小区标识符被分成小区组。 主同步信道（100-A，100-B）包括关于小区组中小区标识符的信息。 次同步信道（101-A，101-B）包括关于小区组的信息。 对应于导频信道PN码分配辅同步码。
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公开(公告)号：KR1020080076693A
公开(公告)日：2008-08-20
申请号：KR1020070115446
申请日：2007-11-13
CPC classification number: H04L27/2626 , H04B7/0617 , H04L1/004 , H04L1/0078 , H04L27/2647
Abstract: A method for transmitting/receiving a broadcast channel signal is provided to increase a signal to interference ratio in accordance with the time of a receiver through soft-combining by making a transmitter change a symbol mapping pattern applied whenever transmitting the broadcast channel signal. A method for transmitting/receiving a broadcast channel signal includes the steps of: at a symbol mapping unit(120), selecting a second symbol mapping pattern, which is different from a first symbol mapping pattern of a previous transmission period, as the mapping pattern of each broadcast channel symbol of the current transmission period; and at a radio frequency transmission unit(150), transmitting the broadcast channel signal based on the second symbol mapping pattern. The interval between a frequency used in the first symbol mapping pattern and a frequency used in the second symbol mapping pattern is larger than a coherence band of the channel to map the same broadcast channel symbol.
Abstract translation: 提供一种用于发送/接收广播信道信号的方法，用于通过使发射机改变每当发送广播信道信号时应用的符号映射模式，通过软组合来根据接收机的时间来增加信号干扰比。 一种用于发送/接收广播信道信号的方法包括以下步骤：在符号映射单元（120）处，选择不同于先前传输周期的第一符号映射模式的第二符号映射模式作为映射模式 当前传输周期的每个广播信道符号; 和射频发送单元（150），基于第二符号映射模式发送广播信道信号。 在第一符号映射模式中使用的频率与在第二符号映射模式中使用的频率之间的间隔大于用于映射相同广播频道符号的频道的相干频带。
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130.发明授权가변 정보 길이 및 가변 부호율을 가진 ＬＤＰＣ 부호의패리티 검사 행렬 생성 방법, 부/복호화 방법 및 이를이용하는 장치 失效奇偶校验矩阵生成方法，用于具有可变信息长度的LDPC码的编码/解码方法和使用其的装置
公开(公告)号：KR100833515B1
公开(公告)日：2008-05-29
申请号：KR1020070021965
申请日：2007-03-06
Applicant: 한국전자통신연구원
IPC: H03M13/11
CPC classification number: H03M13/116 , H03M13/1188 , H03M13/618 , H03M13/6356 , H03M13/6393
Abstract: A method for generating a parity check matrix of an LDPC code having a variable information length and a variable code rate, an encoding/decoding method, and an apparatus using the same are provided to form easily a decoder of a variable information length and variable code rate by using only one parallel processing type hardware. A first parity check matrix generation process is performed to generate a first parity check matrix including a first information block and a parity block. An mth parity check matrix generation process is performed to generate an mth parity check matrix by adding an mth information block to a generated m-1th parity check matrix. The mth parity check matrix generation process includes a process for generating the mth parity check matrix by optimizing degree distribution and cycle distribution.
Abstract translation: 提供一种用于生成具有可变信息长度和可变码率的LDPC码的奇偶校验矩阵的方法，编码/解码方法以及使用其的装置，以便容易地形成可变信息长度和可变码的解码器 仅使用一个并行处理类型硬件的速率。 执行第一奇偶校验矩阵生成处理以生成包括第一信息块和奇偶校验块的第一奇偶校验矩阵。 执行第m个奇偶校验矩阵生成处理，以通过将第m个信息块与生成的第m-1个奇偶校验矩阵相加来生成第m个奇偶校验矩阵。 第m个奇偶校验矩阵生成处理包括通过优化度分布和周期分布来生成第m个奇偶校验矩阵的处理。
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